Post on 20-Feb-2018
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Debitul de aer raportat la starea normala Da= 385Debitul de gaze raportat la starea normala Dg= 350
Temperatura aerului la intrare t'a= 22
Temperatura aerului la iesire t''a= 203
Temperatura gazelor la intrare t'g= 890
Compozitia gazelor de ardere r Co2= 5
r O2= 7.5
r 2o= !2.5
r Co= 0.25
r "2= 7#.75$oe%$ientul de retinere a temperaturii &r= 0.97
iteza aerului in $onditii normale prin tei (a!= !5
iteza aerului in $onditii normale prin spatiul inelar (a2= !0
iteza gazelor in $onditii normale (g= 0.8
diametrul e)terior al teilor interioare de= 0.0#
grosimea peretelui teilor interioare *p= 0.5
$ondu$tiitatea termi$a a peretelui +p= #0
diametrul interior al teilor interioare di= 0.039
grosimea irolei interioare,e)terioare *= 0.005
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n= 5
ngr= !#
"m-3,"m-3,
/C
/C
/C
m,s
m,s
m,s
m
mm
1,m4
m
m
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6
t
0 !.297 2#.#7 !7.2 !.2928
!00 !.3 32.!7 2!.9
200 !.307 39.32 2300 !.3!7 #.!7 29.7
:aze de ardere
Caldura spe$i%$a medie
t "2 O2 Co Co2 2O
00 !.3#5 !.#!7 !.357 2.0#! !.!
700 !.359 !.#3# !.372 2.088 !.#
800 !.372 !.#5 !.38 2.!3! !.7900 !.385 !.#5 !.# 2.!9 !.95
!000 !.397 !.#78 !.#!3 2.20# !.72
;as$ozitatea dinami$a
t "2 O2 Co Co2 2O
00 3.9 #3.5 37.# 37.7 33.!
700 39. #7 #0.# #!.# 37.9
800 #2.3 50.2 #3.2 ##. #2.
900 #5 53.# # #8.! #7.5
!000 #7.5 5.5 #8.7 5!.5 52.#
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Condu$tiitatea termi$a
t "2 O2 Co Co2 2O
00 0.# 7.# 59.7 2.! 8!.8
700 #.2 72.8 5 8.8 95.
800 7.5 77.7 70.! 75.! !!0900 70.! 82 75.5 80.9 !2#
!000 72.3 85.8 80. 8.3 !#!
Densitatea la starea normala
t "2 O2 Co Co2 2O
0 !.205 !.#289 !.25 !.97#8 0.803
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Temperatura Cam +a!3-3 &a!0-
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aa!0-5 ?ra
2!.7837 0.99532
52.7!#8 0.802!
35.890# 0.8209!
35.890# 0.8209!
#2.#895# 0.7559
28.##589 0.900#73!.#!3 0.878!
#3.920#8 0.7#33
#7.#772 0.7!2!
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Temperatura Cgm +g!0-3 &g!0-
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ag!0-# ?rg
@D>;,0A @D>;,0A
@D>;,0A @D>;,0A
@D>;,0A @D>;,0A